Habold jarvis



- H; JARVIS.

SELF CLOSING TAP. APPLICATION FlLED JUNE 1. I920.

Reissued N0". 15, 1921.

0Z4 l l J INVW TOR HHROLD JAR V15 UNITED STATES PATENT OFFICE.

HAROLD JARYIS, OF TORONTO, ONTARIO, CANADA.

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To all whom it may concern:

Be it known that I HAROLD JARVIS, a subject of the King of (ireatBritain, and resident of the cit of Toronto, county of York, Province ofnta'rio, in the Dominion of Canada, have invented certain new and usefulImprovements in Self-Closing Taps, de scribed in the followingspecification and illustrated in the accompanying. drawings, that formpart of the same.

The prinei" 1 object of the invention is to eliminate t e undesirablenoise and detrimental vibration commonly known as water hammer in apressure actuated self closing tap}. A

he principal feature in the invention consists in the novel constructionof the valve spindle and the arrangement of the closin valve whereby thepassage through whic the water flows is gradually cut off by the valvestem in the closing of the valve, the stem being formed withlongitudinal grooves to allow of the passage of the water and a solidportion between said grooves and the closing valve.

In the drawings,

Figure 1 is an elevational part sectional view of a tap constructed inaccordance with this invention; V

Fig. 2 is a perspective detail of the valve stem;

Fig. 3 is-a cross sectional view through the line ab of Fig. 2;

Fig. 4 is a cross sectional view through the line cd of Fig. 1; and

Fig. 5 is a similar view to Fig. 1 and taken at right angles thereto.

Pressure closing valves of various forms have been known for aconsiderable period and it is the main object of this invention toovercome the difliculties met with in the use of such valves. Thisresult has been achieved in the construction shown, in which theinterior of the valve body 1 is formed with an annular shoulder 2 havingthe 'centrally arranged circular hole 3 and the valve seat 4 on theunder face thereof.

. The water enters the chamber 5 below the valve seat through the hole 5indicated in dotted lines and flows upwardly from the hole indicated indotted lines through the Specification of Reissued Letters Patent.

Reissued Nov. 15, 1921.

Application for hole 3 and out through a suitable nozzle or faucet (Fig.5) connected with the chamber 6, the opening through the nozzle beingindicated by 6 V The c lindrical valve stem 7 is slidably arranged 1nthe hole 3 and the upper end extends through the packing nut 8 at thetop of the valve, the packing nut being screwed on the neck 28 risingfrom the valve-body 1. The lower end of the valve stem is formed with anenlarged cylindrical portion 9, upon the upper surface of which andsurrounding tlie stem is arranged a flat washer 10, which washer isadapted to abut the valve seat 4. The members 9 and 10 constitute thevalve head which effectively closes the passage, the pressure holdin itclosed. A. 0011 spring 11 is arranged within the chamber 5 to insure theclosing of the valve.

The valve stem 7 is grooved as shown preferably at three sides to form atriangular shaped section 12, the lower ends 15 of the grooves beingpreferably beveled and spaced a substantial distance above the washer10, so that in closing, the full circular ortion 14 will enter the hole3 and out o the supply before the full pressure of the water 15 exertedagainst the bottom end of the s indle to hold it closed. Thisarrangement or cutting off the flow eliminates the hammering effectwhich takes place in the present forms of self closing taps. It isnecessary that the washer 10 be flat in order to confine a portion ofthe water between it and the shoulder 2, for the purpose of cushioningthe impact thus eliminatlng the-water hammer. The valve stem 7 isoperated to open the valve by means of the lever 16' engaging the topthereof, said lever being pivotally secured to the lug projection 17 ofthe member 18 secured to the upper part of l the valve body 1 by ascrew-threaded connection with the neck 28.

The member 18 is preferably provided with an upwardly projecting lug 19which is slotted vertically to receive the lever 16 that is so as toextend on each side thereof and a pin 20 extends across the top of theslotto secure the lever from being turned over. A fixed arm 21 formspart of the member 18 and the lever 16 is provided with a lug tegralshoulder with a relativel 22 adapted to engage the arm member 21 tolimit the downward movement of the lever and prevent it being sprung.

The upper face of the lever 16 is formed with a longitudinal slot 23,which is preferably undercut as shown in Fig. 4, and in this slot isarranged a sliding block 24 which block is formed with a plurality ofsteps. These steps are adapted to engage the pin 20 so as to hold thetap open if it is desired to have the water running for any specialpurpose. This block arrangement may be dispensed with if desired,without in any way interfering with the operation of the tap.

In the operation of this tap, upon the squeezing of the lever 16 and arm21 together the lever 16 presses downwardly upon the valve stem 7andremoves the valve washer 10 from its seat. The further downwardmovement brings the beveled ends 15 of the grooves into communicationwith the pressure chamber 5 and the water then flows freely through thehole 3 around the stem. This flow continues as long as the lever 16 isheld down, but immediately upon its release the pressure of the spring11 and the pressure of the water against the underside of the valve,moves the valve spindle upwardly Ordinarily when this action occurs thepressure of the water closes the valve with a snap and a hammer resultsbut by arranging the grooves in the spindle in the manner described theflow is so cut off that the closing actionof the spindle is retarded.

A tap constructed as described hasbeen very satisfactorily tested undervarious pressures and it is found to be absolute] free from noise.

I disclaim the structure suggested in Patent No. 124,082, February 27,1872-to Thomas Prosser of Brooklyn, New York State, for cocks, toconstruct a tap with an integral shoulder with a relatively large port,and a valve-head provided -with a washer to be seated on the shoulder,and the body of the tap having a chamber with closure through which thevalve-head may be introduced; and I also disclaim the structuresuggested in Patent No. 1,273,931, July 30, 1918 to John P. Schild toconstruct a self-closing faucet with an internal plug separatelyconstructed to be entered into the faucet body and fastened rigidlytherein, this plug carrying slidably therein a valve stem which isgrooved and has an ungrooved portion contiguous to a valve head, theidea i being to close a port through the plug by the valve stem beforethe valve head comes to its seat. ever, suggest a unitary body havingthe insmall port closed by a valve stem'carrying a valve head adaptedto. beseated on the shoulder and a stem'being also cut away to presentNeither of these structures, howa port when the portion of the stemclosing the port in the body is displaced from the port as claimedhereinafter.

\Vhat I claim as my invention is:

1. A self-closing tap, comprising, a body having a cylindrical verticalbore and a valveseat in the form of a flatflange integral with the bodyand extending into'the bore, a unitary valve stem having a flat head atthe bottom end and a washer adapted to engage said seat from the underside, said valve stem being asnug sliding fit in the flange and having arecess in the periphery spaced above the washer, the lower endof thestem being adapted to cut oil the flow of water prior to the closing ofthe washer against the seat.

2. In a self-closing tap, a unitary body having an integral internalannular shoulder presenting a flat valve seat with an openingtherethrough, and such body having a chamber communicating with the seatand the chamber having an entrance with closure; a valve stem having avalve head, the entrance through the chamber permitting the passage ofthe valve head, such valve head presenting a flat annular face to comeinto flat contact with the face of the shoulder and adapted to closesaid opening, said stem passing through the opening in the valve seatand having a portion adjacent to the valve head adapted to close saidopening sufficiently prior to the seating of the valve head to presentwater-hammer, said stem havin above the last mentioned portion straig tgrooves parallel to its axis and with their ends toward the valve headgradually diminished in depth.

. 3. A self closing tap comprising a valve body having a central chamberopen at the top andprovided-with a valve seat arran d between inflow andoutflow openings, a va ve stem arranged in said chamber and extendingthereabove and having a valve at its lower end for closing against thevalve seat, a packing nut closing the top of said chamber and encirclingsaid valve stem and a member having a rigid arm extending therefrom andsecured to said body and encircling said stem, a lever pivotallysupported from said member and extending over and engaging the top ofthe valve stem and arranged above said arm, means for guiding said leverand means secured thereto intermediate of its length for limiting themovement of the same in one direction.

4. In a self closing valve, a body portion open at the top and having avalve seat, a grooved valve stem extending through said valve seat andhavinga valve at the inner end adapted to be pressure closed againstsaid seat, a packing nut closing the open top of the body portion, amember secured to the top of said body portion, a lug extending upwardlyfrom said member, a lever pivotally secured to the up er end of said lugand closed valve, a lever pivotally supported adapted to engage t eupper end of said from the valve body for opening the valve, valve stem,a slotted lug projecting upa slotted lug extending each side of saidwardly from said member on the side oppolever and having a cross bar atthe top, and

5 site to the lever supporting lug, said slotted a member slid-ablyarranged on said lever 15 lug forming a guide for limiting themoveadapted to engage the underside of said ment of said lever, and arigid arm projectcross bar for holding the valve open. ing from saidmember and arranged below Signed at the city of Montreal this tenth saidlever. day of May, 1920.

10 5. In a self-closing valve, a pressure HAROLD JARVIS.

